<template>
  <div>
      <!-- 顶部滑动条 -->
      <div id="slider" class="mui-slider">
				<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
					<div class="mui-scroll">
						<a :class="['mui-control-item',item.id == 0 ? 'mui-active' : '']" v-for="(item,i) in cates" :key="i" @tap="getPhotoListByCateId(item.id)">
							{{item.title}}
						</a>
						
					</div>
				</div>
		</div>
		<!-- 图片列表区域 -->
		<ul class="photo-list">
			<router-link v-for="(item,i) in list" :key="i" :to="'/home/photoinfo/' + item.id" tag="li">
				<img v-lazy="item.img_url" >
				<div class="info">
					<h1 class="info-title">{{item.title}}</h1>
					<div class="info-body">{{item.zhaiyao}}</div>
				</div>
			</router-link>
		</ul>
  </div>
</template>

<script>
//导入mui的js文件
import mui from '../../lib/mui/js/mui.min.js'
import {Toast} from 'mint-ui'
export default {
    data(){
        return {
			cates: [],//所有分类的列表数组
			list: [], //图片列表的数组
        }
	},
	created(){
		this.getAllCategory(),
		this.getPhotoListByCateId(0)//默认进入页面请求所有列表的数据
	},
    mounted(){ //
        //初始化滑动控件
        mui('.mui-scroll-wrapper').scroll({
	        deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
        });
    },
    methods: {
		getAllCategory(){ //获取所有图片分类
			this.$http.get('api/getimgcategory').then(result=>{
				if(result.body.status === 0){
					this.cates = result.body.message;
					this.cates.unshift({title: '全部',id:0});
				}else{
					Toast('获取数据失败')
				}
			})
		},
		getPhotoListByCateId(cateId){ //根据分类id获取图片列表
			this.$http.get('api/getimages/' + cateId).then(result=>{
				if(result.body.status === 0){
					this.list = result.body.message;
				}else{
					Toast('请求数据失败')
				}
			})
			
		}
    }
}
</script>

<style scoped>
* {
    touch-action: pan-y;
}
.photo-list li img[lazy="loading"]{
	width: 40px;
	height: 300px;
	margin: auto;
}
.photo-list{
	list-style: none;
	padding: 10px;
	margin: 0;
	padding-bottom: 0;
}
.photo-list li{
	background-color: #ccc;
	text-align: center;
	margin-bottom: 10px;
	box-shadow: 0 0 9px #999;
	position: relative;
}
.photo-list li img {
	width: 100%;
	vertical-align: middle;
}
.info {
	position: absolute;
	bottom: 0;
	left: 0;
	background-color: rgba(0,0,0,0.4);
	color: #fff;
	text-align: left;
	max-height: 84px;
}
.info-title {
	font-size: 14px;
}
.info-body {
	font-size: 13px;
}

</style>

